Heating-stove.



PATEN'TED JAN.I31, 1905.

hrm-'78m09.-

- Y W.- J. SMITH.

HEATING STOVH. l AIPPJITION FILED HAB.' 3,1904.

A 2 sums-.SHEET 1;

PATENTED JAN. s1, 1905, J. SMITH.

HEATING STOVB.

APPLICATION FILED MAB.. 8, 1904 2 SHEETS-SHEET 2.

Patented january 31, k1905.

PATENT OFFICE.

' WILLIAM J.` SMI'IH, OFl EAST ST.(LOUIS, ILLINOIS.

HEATING-STOVE.

SPECIFICATION formingpart of Letters Patent No.` '781,309,1datedr January 31, 1905.

' Louis, St. Clair county, Illinois, have invented certain new and useful Improvements in Heat-V ing-Stoves, of which the following'is a specification containing a full', clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to downdraft heatingstovesr and it consists in thenovel construction hereinafter described and claimed.

The object of my invention is to provide improved downdraft heating-stove which shall be especially adapted for use in burningsoft coal, which shall have greater heating capacity and more perfect combustion and consumption of smoke than ordinary heating-stoves now in use.

In the drawings, Figure 1 is a perspective view of a stove embodying my invention. Fig. 2 is' a sectional plan view, the section being taken on the line 2 2 of Fig. 1. Fig. 3 is a sectional elevation, the section being taken on line 3 3 of Fig. 4. Fig. 4 is a vertical section on the line 44 of Fig. 3. Fig. 5 is a sectional plan view, the section being taken on the line 5 5 of Fig. 4.

The stove is preferably formed in three widesections 1, 2, and 3, all of the same width, and the centralsection 2 contains the lire-pot 4, its common shaking-grate 5 and a suitable lining 6 for the wallsof the central section,

. 7 between the walls of the central section andv while theouter sections l and'3 are` located one upon one side of the said central sectionV and the other upon the opposite sidel of said central section, with a considerable air-space the said outer sections.

I have found that a rectangular shape'economizes room, as it is adapted to be placed very close to the wall, like a common steam-radiator, the ,draft-pipe 8 projecting from the top, so that it is not in the way.`

The stove may be made of either cast o `sheet metal vand is provided with an'upper horizontall chamber 9 and a lower horizontal chamber 10.

The upper and lower horizontal chambers lining 6.

Application filed March a 1904. serai Np, 197,196.

side chambers 1 and 3, the ends .of which latter open into said two horizontalcharnbers.

i 9 and'10 are connected at their `ends by the 56 The draft-pipe 8 is fitted to a collar-11, lo-

(ated centrally of the upper horizontal charner. l

Located centrally in the upper wall of the central chamber 2 is a direct-draft passage 12, which is controlled'by a commonsliding damper 13, having a handle 14, which projects upon the exterior of the stove at the front.

15 indicates the fuel-door, which'is hinged to the front of the central section 2 at a point 'some distance above the upper edge of the 16 indicates a common rotary valve or damper-.for controlling the entrance of air to the central chamber 2, and the said .rotary valve is preferably mounted in thefront of said chamber over an opening 17, and upon the in-l ner-face of said central chamberv over said 'opening is a perforated air-distributer 18,

which is shown U-shapedin cross-section and extending in a horizontal direction almost completely across the front of said central chamber.

The dre-pot 4 is shown oval'in plan view, while the lining 6 above it is arranged in rectangular form. rlhe corners between the 'lower edge of said lining and the upper edge of saidlire-pot are filled by triangular projections 19, formedupon the upper edge of the Located Ywithin the lower horizontal chamber 10 beneath the fire-grate 5 is a common removable ash-pan 20', which is provided in its front with a common rotary valve or damper 21.

The side chambers'l and 3, it will be ob served, are very wide, having, in fact, the same `width as has the central chamber, which contains the .fire-'pot 4.

I do not herein confine myself to the specific construction of details illustrated in the drawl ings, as ,it is obvious that the same may be varied by skilled workmen without departing from the scope of my invention.

The operation is as follows: Fire being started in the fire-pot 4, the products of com.`

bustion thereof should be at first permitted to pass directly to the pipe 8 by uncovering the direct-draft opening 12 and air will then be drawn into the ash-pan 2O by way of the damper 21, and said air will pass upwardly through the grate 5, and an updraft will be established through the fire-pot and the central chamber 2. After the fire has been properly started the damper 13 is manipulated by means of its handle 14, and the direct-draft opening 12 is closed, which will cause the products of combustion to reverse their former movement, and air will then be drawn into the central chamber through the rotary damper 16 and the air-distributer 18 and will pass downwardly in the central chamber and equally through the fuel within the fire-pot, and also equally past all points of the periphery of the lire-grate 5, and will then pass into the lower horizontal chamber IO and thence into the side chambers 1 and 3 and pass upwardly therein, and thence into the upper horizontal chamber 9, and, finally, the products of combustion will make their exit through the pipe 8. Fire will pass downwardly in substantially equal volumes at diametrically opposite peripheral points of the fire-grate 5 by reason of the fact that the side chambers 1 and 3 are of such big Width that the fire is drawn equally past the periphery of the lire-grate at all points therein, which of course could not be the case if said side chambers were narrower than the fire-pot or narrower than the diameter of the lire-grate, as in the latter case the lire would necessarily be concentrated at the small points at which the narrow outlet-pipes were connected.

I should have stated that the damper 21 in the front of the ash-pan should be closed while the stove is operating` as a downdraft-stove, except when it is desired to keep lire over night, when the said damper 21 may be opened and the damper 16 closed.

I desire to deline the word depth as found in the following claim as meaning the width of the edge of the stove as distinguished from the width of the front thereof.

What I claim is- The improved downdraft heating stove, comprising a central cham ber, side chambers approximately of the depth of the central chamber and separated therefrom with a free air-space between them, u pper and lower chambers in communication with the central chamber and the side chambers, a smoke-pipe connection applied to the upper chamber, a directdraft passage from the central chan'iber to the upper chamber, a damper therefor, means for admitting air for combustion to the central chamber, above the fuel, a grate in the central chamber, and means for admitting air below the grate.

In testimony whereof I have signed my name to this specification in presence of two subscribing witnesses.

WILLIAM J. SMITH. Witnesses:

ALFRED A. Eioits, MAY C. FELLHAUER. 

